IBM TS4500 Introduction And Planning Manual page 200

node card
Within the TS4500 tape library, one of
four circuit assemblies (accessor controller
card, motor driver assembly, Medium
Changer card pack, and operator panel
assembly) that communicate with each
other.
nominal
Approximate.
nominal power
The amount of power (in kilowatts) that
the TS4500 tape library dissipates during
normal operation.
non-addressable cartridge storage slot
See inaccessible cartridge storage slot.
nondisruptive firmware update
The ability to update drive or library
firmware without scheduling downtime.
The TS4500 tape library gives the ability
to perform a nondisruptive update for its
library firmware, as well as firmware for
all 3592 tape drives and LTO 2 and later
LTO tape drives.
non-volatile memory
Types of memory that retain their
contents when the power is turned off.
ROM is nonvolatile, whereas RAM is
volatile.
O
Oersted
The unit of magnetic field strength in the
unrationalized centimeter-gram-second
(cgs) electromagnetic system. The Oersted
is the magnetic field strength in the
interior of an elongated, uniformly
wound solenoid that is excited with a
linear current density in its winding of 1
abampere per 4 centimeters of axial
length.
operating environment
The temperature, relative humidity rate,
and wet bulb temperature of the room in
which the TS4500 tape library routinely
conducts the processing.
operating system
The master computer control program
that translates the user's commands and
allows software application programs to
interact with the computer's hardware.
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IBM TS4500: Introduction and Planning Guide
operator panel
A functional unit that controls the TS3500
tape library. The unit's LCD touchscreen
provides information about the operation
of the library.
operator panel controller
Within the TS3500 tape library, a circuit
board that facilitates communication
between the accessor controller and the
operator panel. The controller provides
input to and output from the LCD, and
senses and locks the I/O stations. In
addition, the LCD activity and service
menus are executed in the operator panel
controller with support from the accessor
controller and the drives (by using the
Medium Changer card packs).
optimized dual gripper
An electromechanical device that is
mounted on the pivot assembly and gets
or puts cartridges from or to a storage
slot, tape drive, or I/O station.
P
partition
A fixed-size division of storage.
patch panel
Located at the rear of the base or
expansion frame in a TS4500 tape library,
an optional unit that houses the fiber
cable connections between the servers and
the individual drives.
Pause key
On the display panel of the TS4500 tape
library, a button that causes the cartridge
accessor to park itself and provide clear
access to the library's interior when you
power off the library or open the front
door. The pause button enables quick
recovery when you power on the library
or close the front door.
PB Petabyte.
PDF See Portable Document Format.
Petabyte
1v000v000v000v000v000 bytes.
ping
(1) A command that calls an IP address.
(2) The act of issuing a command that
calls an IP address.
pivot assembly
On the cartridge accessor of the TS4500